package com.heima.admin.service.impl;
import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.core.metadata.IPage;
import com.baomidou.mybatisplus.core.toolkit.Wrappers;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.heima.admin.mapper.AdChannelMapper;
import com.heima.admin.service.AdChannelService;
import com.heima.common.exception.CustomException;
import com.heima.model.admin.dtos.ChannelDTO;
import com.heima.model.admin.pojos.AdChannel;
import com.heima.model.common.dtos.PageResponseResult;
import com.heima.model.common.dtos.ResponseResult;
import com.heima.model.common.enums.AppHttpCodeEnum;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang3.StringUtils;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;
import sun.util.resources.cldr.to.CalendarData_to_TO;

import java.util.Date;

@Slf4j
@Service
public class AdChannelServiceImpl extends ServiceImpl<AdChannelMapper, AdChannel> implements AdChannelService {
  @Override
  /*
  * 按照name模糊查询
  * ord升序
  * */
  public ResponseResult findByNameAndPage(ChannelDTO dto) {
    //1.参数检测
    if(dto==null){
      return ResponseResult.errorResult(AppHttpCodeEnum.PARAM_INVALID);
    }
    //分页参数检查
    dto.checkParam();
    //2.按名称模糊分页查询
    Page page = new Page(dto.getPage(),dto.getSize());
    LambdaQueryWrapper<AdChannel> lambdaQueryWrapper = Wrappers.lambdaQuery();
    if(StringUtils.isNotBlank(dto.getName())){
      lambdaQueryWrapper.like(AdChannel::getName,dto.getName());
    }
    // 添加排序
    lambdaQueryWrapper.orderByAsc(AdChannel::getOrd);//shengxu
    
    IPage result = page(page, lambdaQueryWrapper);
    //3.结果封装
    ResponseResult responseResult =
      new PageResponseResult(dto.getPage(),dto.getSize(),result.getTotal());
    responseResult.setData(result.getRecords());
    return responseResult;
  }

 // TO:--------------------------------------------
  /**
   * 新增
   * @param adChannel
   * @return
   */
  @Override
  public ResponseResult insert(AdChannel adChannel) {
    // 1 参数校验
    if (adChannel == null || StringUtils.isBlank(adChannel.getName())) {
      return ResponseResult.errorResult(AppHttpCodeEnum.PARAM_REQUIRE,"频道名称不能为空");
    }

    if (adChannel.getName().length()>10) {
      return ResponseResult.errorResult(AppHttpCodeEnum.PARAM_REQUIRE,"频道名不能大于10个字符");
    }
    // 2 判断该频道是否存在

    int count = this.count(Wrappers.<AdChannel>lambdaQuery()
            .eq(AdChannel::getName, adChannel.getName()));
    if(count > 0){
      return ResponseResult.errorResult(AppHttpCodeEnum.DATA_EXIST,"该频道已存在");
    }
    // 3 执行新增
    adChannel.setCreatedTime(new Date());
    save(adChannel);
    // 4 返回结果
    return ResponseResult.okResult();
  }



  //--------------------------------------------------------------------------------------------------------------------------------
  /**
   * 修改频道及频道状态
   * @param adChannel
   * @return
   */
  @Override
  public ResponseResult update(AdChannel adChannel) {
    //1 参数校验
    if (adChannel == null || adChannel.getId() == null) {
      return ResponseResult.errorResult(AppHttpCodeEnum.PARAM_INVALID);
    }
    //2 执行修改
    AdChannel channel = getById(adChannel.getId());
    if (channel == null) {
      return ResponseResult.errorResult(AppHttpCodeEnum.DATA_NOT_EXIST,"频道信息不存在");
    }
    //3. 校验名称唯一性
    if(StringUtils.isNotBlank(adChannel.getName())
            &&
            !adChannel.getName().equals(channel.getName())){
      int count = this.count(Wrappers.<AdChannel>lambdaQuery()
              .eq(AdChannel::getName, adChannel.getName()));
      if(count > 0){
        return ResponseResult.errorResult(AppHttpCodeEnum.DATA_EXIST,"该频道已存在");
      }
    }
    updateById(adChannel);
    //4 返回结果
    return ResponseResult.okResult();
  }

  //----------------------------------------------------------------------------------------------------------------------------------

 @Override
  public ResponseResult deleteById(Integer id) {

    //1.检查参数
    if(id == null){
      return ResponseResult.errorResult(AppHttpCodeEnum.PARAM_INVALID);
    }
    //2.判断当前频道是否存在 和 是否有效
    AdChannel adChannel = getById(id);
    if(adChannel==null){
      return ResponseResult.errorResult(AppHttpCodeEnum.DATA_NOT_EXIST);
    }
    // 启用状态下不能删除
    if (adChannel.getStatus()) {
      return ResponseResult.errorResult(AppHttpCodeEnum.PARAM_REQUIRE);
    }
//    System.out.println(1/0);
    //3.删除频道
    removeById(id);


    return ResponseResult.okResult(AppHttpCodeEnum.SUCCESS);
  }


  //--------------------------------------------------------------------------------------------------------------------------------

//  @Override
//  public ResponseResult deleteById(Integer id) {
//    //1.检查参数
//    if(id == null){
//      return ResponseResult.errorResult(AppHttpCodeEnum.PARAM_INVALID);
//    }
//    //2.判断当前频道是否存在 和 是否有效
//    AdChannel adChannel = getById(id);
//    if(adChannel==null){
//      return ResponseResult.errorResult(AppHttpCodeEnum.DATA_NOT_EXIST);
//    }
//    // 启用状态下不能删除
//    if (adChannel.getStatus()) {
//      return ResponseResult.errorResult(AppHttpCodeEnum.PARAM_REQUIRE);
//    }
//       int i = 1 / 0;
//    //3.删除频道
//    removeById(id);
//    return ResponseResult.okResult(AppHttpCodeEnum.SUCCESS);
//  }
//------------------------------------------------------------------------------------------------------------------------------------



}